A star-stuffed stop by Jefferson Starship at the Roswell UFO Festival offers new insight into the legends of Jefferson Airplane, the Dead and CSN, as well — along with a powerful reminder of that era’s deep sense of musical community.

Silver Age is that rarest of Bob Mould records: An unadorned, primal rocker, all bloody-knuckled riffs and flinty attitude with little or no introspection, much less sentiment. That makes sense, in many ways.

Danny Seraphine served as the drummer for Chicago from 1967 to 1990. He may not be one of the more famous drummers in rock ‘n roll history but he is definitely on the list of the most respected skin beaters of the classic rock era.